两个27兆赫兹的简单感应线圈作为热疗治疗器具：理论分析与研发
Two 27 MHz Simple Inductive Loops, as Hyperthermia Treatment Applicators: Theoretical Analysis and Development.
作者信息
Kouloulias Vassilis, Karanasiou Irene, Koutsoupidou Maria, Matsopoulos George, Kouvaris John, Uzunoglu Nikolaos
机构信息
2nd Department of Radiology, ATTIKON University Hospital, Medical School, University of Athens, Rimini 1, Haidari, 124 64 Athens, Greece ; Microwave and Fiber Optics Laboratory, School of Electrical and Computer Engineering, Institute of Communication and Computer Systems, National Technical University of Athens, Heroon Polytechniou 9, 15780 Zografou, Greece ; 1st Department of Radiology, Aretaieion University Hospital, Medical School, University of Athens, Vassilissis Sofias 76, 115 28 Athens, Greece.
Microwave and Fiber Optics Laboratory, School of Electrical and Computer Engineering, Institute of Communication and Computer Systems, National Technical University of Athens, Heroon Polytechniou 9, 15780 Zografou, Greece.
出版信息
Comput Math Methods Med. 2015;2015:751035. doi: 10.1155/2015/751035. Epub 2015 Nov 16.
BACKGROUND
Deep heating is still the main subject for research in hyperthermia treatment.
AIM
The purpose of this study was to develop and analyze a simple loop as a heating applicator.
METHODS
The performance of two 27 MHz inductive loop antennas as potential applicators in hyperthermia treatment was studied theoretically as well as experimentally in phantoms. Two inductive loop antennas with radii 7 cm and 9 cm were designed, simulated, and constructed. The theoretical analysis was performed by using Green's function and Bessel's function technique. Experiments were performed with phantoms radiated by the aforementioned loop antennas.
RESULTS
The specific absorption rate (SAR) distributions were estimated from the respective local phantom temperature measurements. Comparisons of the theoretical, simulation, and experimental studies showed satisfying agreement. The penetration depth was measured theoretically and experimentally in the range of 2-3.5 cm.
CONCLUSION
The theoretical and experimental analysis showed that current loops are efficient in the case where the peripheral heating of spherical tumor formation located at 2-3.5 cm depth is required.
背景
深部加热仍是热疗治疗研究的主要课题。
目的
本研究的目的是开发并分析一种作为加热施加器的简单环形线圈。
方法
理论上以及在体模中通过实验研究了两个27MHz感应环形天线作为热疗治疗中潜在施加器的性能。设计、模拟并构建了两个半径分别为7cm和9cm的感应环形天线。使用格林函数和贝塞尔函数技术进行理论分析。对由上述环形天线辐射的体模进行实验。
结果
根据各自局部体模温度测量估计比吸收率（SAR）分布。理论、模拟和实验研究的比较显示出令人满意的一致性。理论和实验测量的穿透深度在2 - 3.5cm范围内。
结论
理论和实验分析表明，在需要对位于2 - 3.5cm深度的球形肿瘤形成进行周边加热的情况下，电流环是有效的。
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